GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Cobalt 🢒 Engine 🢒 Engine Mechanical - 2.0L 🢒 Intake Manifold Cleaning and Inspection

    Object Number: 1769840 Size: SH
  1. Clean the intake manifold mating surfaces.
  2. Inspect the intake manifold for damage.
  3. Inspect the intake manifold for cracks near metallic inserts.
  4. Inspect the crankcase ventilation passages in the intake manifold face for blockage.

    5. Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 1769841 Size: SH
  5. Clean the crankcase ventilation passages with compressed air, if necessary. Use a maximum of 172 kPa (25 psi) of air pressure.
  6. Replace the intake manifold, as necessary.